Java Code Examples for com.firebase.client.Firebase#updateChildren()

/**
 * Handle the incoming message from the nearby device. Parse the message to retrieve the appropriate data.
 */
private void handleIncomingMessage(Message message) {
    LogUtils.LOGE("***> message", DeviceMessage.fromNearbyMessage(message).getMessageBody());

    String[] messageParts = DeviceMessage.fromNearbyMessage(message).getMessageBody().split(Pattern.quote("|"));

    if (messageParts.length == 0) {
        LogUtils.LOGE("***> error", "error parsing message");
        return;
    }

    mFirebaseUid = messageParts[0];
    mDeviceNum = Integer.valueOf(messageParts[1]);
    mTotalDevices = Integer.valueOf(messageParts[2]);
    String deviceId = messageParts[3];

    if (!PreferencesUtils.getBoolean(mActivity, R.string.key_is_connected, false)) {
        // Update Firebase and remove the old FirebaseUid
        String currentFirebaseUid = PreferencesUtils.getString(mActivity, R.string.key_firebase_uid, "");
        LogUtils.LOGE("***> handleIncomingMessage", "remove firebase uid:" + currentFirebaseUid);
        Firebase userChallengeRef = new Firebase(Constants.FIREBASE_URL_USERS).child(currentFirebaseUid);
        userChallengeRef.removeValue();
    }

    // Update the shared preferences
    PreferencesUtils.setString(mActivity, R.string.key_firebase_uid, mFirebaseUid);
    PreferencesUtils.setInt(mActivity, R.string.key_total_devices, mTotalDevices);
    PreferencesUtils.setInt(mActivity, R.string.key_device_number, mDeviceNum);
    PreferencesUtils.setBoolean(mActivity, R.string.key_is_connected, true);

    // Display the message
    displayMessage();

    // Update the background color
    setInitialValues();

    // Generate next message, based on Firebase
    getNextDeviceFirebase();

    // Update connected status on Firebase
    Map<String, Object> device = new HashMap<>();
    device.put(Constants.FIREBASE_PROPERTY_CONNECTED, true);

    Firebase deviceRef = new Firebase(Constants.FIREBASE_URL_DEVICES).child(mFirebaseUid).child(deviceId);
    deviceRef.updateChildren(device);
    deviceRef.addValueEventListener(new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            Device d = dataSnapshot.getValue(Device.class);
            LogUtils.LOGE("***> deviceRef", "here");
            if (d == null) {
                LogUtils.LOGE("***> setupFirebase", "reset device");
                MainActivity.resetDevice();
            }
        }

        @Override
        public void onCancelled(FirebaseError firebaseError) {

        }
    });

    if (mDeviceNum < mTotalDevices) {
        // Change the display text
        mIntroConnectDevice.setText(mActivity.getString(R.string.text_connect_device, mDeviceNum + 1));

        // Change text/button action
        mDiscover.setOnClickListener(mConnectedClickListener);
    } else {
        mIntroConnectDevice.setVisibility(View.GONE);
        mDiscover.setVisibility(View.GONE);
    }

    unsubscribe();
}
 

/**
 * Setup Firebase for the user and connected devices
 *
 * Update the existing user data with the number of devices selected on the previous screen
 * Add the devices based on the selection
 * Generate the message for the next device
 */
private void setupFirebase() {
    // Update Firebase to include the total number of devices
    if (!TextUtils.isEmpty(mFirebaseUid)) {
        Map<String, Object> profile = new HashMap<>();
        profile.put(Constants.FIREBASE_PROPERTY_NUMBER_DEVICES, mTotalDevices);

        Firebase userRef = new Firebase(Constants.FIREBASE_URL_USERS).child(mFirebaseUid);
        userRef.updateChildren(profile);
        LogUtils.LOGE("***> setupFirebase", "update firebase uid:" + mFirebaseUid);

        // Add device ids to Firebase
        for (int i = 0; i < PreferencesUtils.getInt(mActivity, R.string.key_total_devices, 1); i++) {
            // If the challengeCode is empty, then push a new value to the database
            Firebase deviceRef = new Firebase(Constants.FIREBASE_URL_DEVICES).child(mFirebaseUid);
            final Firebase newDeviceRef = deviceRef.push();

            mDeviceIds[i] = newDeviceRef.getKey();
            final int currentDeviceNumber = i + 1;

            LogUtils.LOGE("***> new device #" + currentDeviceNumber, mDeviceIds[i]);

            Device device = new Device(mDeviceIds[i], i + 1, mDeviceNum == currentDeviceNumber);
            newDeviceRef.setValue(device);
            newDeviceRef.addValueEventListener(new ValueEventListener() {
                @Override
                public void onDataChange(DataSnapshot dataSnapshot) {
                    Device d = dataSnapshot.getValue(Device.class);
                    if (d != null) {
                        LogUtils.LOGE("***> child updated", "id: " + d.getDeviceId());
                        LogUtils.LOGE("***> child updated", "number: " + d.getDeviceNumber());
                        LogUtils.LOGE("***> child updated", "connected: " + d.isConnected());
                        LogUtils.LOGE("***> child updated", "next: " + currentDeviceNumber);

                        // Hide the button and show the message for the first device
                        if (d.isConnected() && d.getDeviceNumber() > 1) {
                            PreferencesUtils.setBoolean(mActivity, R.string.key_message_received, true);

                            LogUtils.LOGE("***> child updated", "unpublished: " + currentDeviceNumber);
                            unpublish();
                            mDiscover.setVisibility(View.GONE);
                            mIntroConnectDevice.setText(mActivity.getString(R.string.text_message_received));
                        }
                    } else {
                        if (!PreferencesUtils.getBoolean(mActivity, R.string.key_device_reset_done, false)) {
                            LogUtils.LOGE("***> setupFirebase", "reset device");
                            MainActivity.resetDevice();
                        }
                    }
                }

                @Override
                public void onCancelled(FirebaseError firebaseError) {

                }
            });

            // Create the message for the next device
            if (i == mDeviceNum) {
                LogUtils.LOGE("***> device", "message created");
                String message = mActivity.getString(R.string.message_body, mFirebaseUid, mDeviceNum + 1,
                        mTotalDevices, newDeviceRef.getKey());
                mDeviceInfoMessage = DeviceMessage.newNearbyMessage(
                        InstanceID.getInstance(mActivity.getApplicationContext()).getId(), message);
            }
        }
    }
}